We will have the following:

So, the heat to add is 3611.52 Joules.
Answer:
B)
Explanation:
That the time period of which they stop.
Personally i would say advertising but I can also see where it could be globalization because the Olympics is about different countries coming together and having friendly competition.
Answer:
The magnitude of the hiker’s displacement is 2.96 km
Explanation:
Let the initial displacement of the hiker, = x = 2km
the final displacement of the hiker, = y = 1.4 km
The resultant of the two vectors, According to Pythagorean theorem is the vector sum of the two vectors.
R' = x' + y'
Check the image uploaded for solution;